The calculated distance (air line) between Mariano Roque Alonso and Concepción is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Concepción is certainly longer, as only the direct route (as the crow flies) between Mariano Roque Alonso and Concepción has been calculated here.
Air line (approximately)
201 kilometers
109 nautical miles